{"id":"https://openalex.org/A5103127009","orcid":"https://orcid.org/0000-0002-1824-2652","observed_orcids":["https://orcid.org/0000-0002-1824-2652"],"display_name":"Hisayasu Saito","raw_author_names":["H Saito","H. Saito","Hisayasu SAITO","Hisayasu Saito","hisayasu saito"],"full_name":"Hisayasu Saito","works_count":51,"cited_by_count":556,"summary_stats":{"2yr_mean_citedness":2.2,"h_index":14,"i10_index":17},"ids":{"openalex":"https://openalex.org/A5103127009","orcid":"https://orcid.org/0000-0002-1824-2652","observed_orcids":["https://orcid.org/0000-0002-1824-2652"]},"affiliations":[{"institution":{"id":"https://openalex.org/I205349734","ror":"https://ror.org/02e16g702","display_name":"Hokkaido University","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]},"years":[2020,2018,2017,2016,2014,2013,2012,2011]},{"institution":{"id":"https://openalex.org/I4210105754","ror":"https://ror.org/01dszvc69","display_name":"Sapporo Azabu Neurosurgical Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210105754"]},"years":[2026,2025,2024,2023]},{"institution":{"id":"https://openalex.org/I4210135093","ror":"https://ror.org/037m3rm63","display_name":"Japanese Red Cross Asahikawa Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I2799517759","https://openalex.org/I4210135093"]},"years":[2018,2017]},{"institution":{"id":"https://openalex.org/I4210141669","ror":"https://ror.org/0419drx70","display_name":"Hokkaido University Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210141669"]},"years":[2012]},{"institution":{"id":"https://openalex.org/I42766147","ror":"https://ror.org/0445phv87","display_name":"University of Toyama","country_code":"JP","type":"education","lineage":["https://openalex.org/I42766147"]},"years":[2022,2021,2020,2019,2018,2013]},{"institution":{"id":"https://openalex.org/I4405286524","ror":"https://ror.org/02cvk1z25","display_name":"Central Institute of Isotope Science, Hokkaido University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I205349734","https://openalex.org/I4405286524"]},"years":[2013]}],"last_known_institutions":[{"id":"https://openalex.org/I4210105754","ror":"https://ror.org/01dszvc69","display_name":"Sapporo Azabu Neurosurgical Hospital","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210105754"]}],"topics":[{"id":"https://openalex.org/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","count":12,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10176","display_name":"Mesenchymal stem cell research","count":11,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11402","display_name":"Vascular Malformations Diagnosis and Treatment","count":10,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12747","display_name":"Moyamoya disease diagnosis and treatment","count":9,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10227","display_name":"Acute Ischemic Stroke Management","count":7,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12747","display_name":"Moyamoya disease diagnosis and treatment","value":0.0004102,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11402","display_name":"Vascular Malformations Diagnosis and Treatment","value":8.25e-05,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","value":5.62e-05,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10176","display_name":"Mesenchymal stem cell research","value":3.89e-05,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11763","display_name":"Intracerebral and Subarachnoid Hemorrhage Research","value":3.44e-05,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9901000261306763},{"id":"2780645631","wikidata":"https://www.wikidata.org/wiki/Q671554","display_name":"Stroke (engine)","score":0.7595400810241699},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.7051043510437012},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.6448960900306702},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.0}],"counts_by_year":[{"year":1934,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1994,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":4,"oa_works_count":0,"cited_by_count":2},{"year":2013,"works_count":8,"oa_works_count":3,"cited_by_count":1},{"year":2014,"works_count":5,"oa_works_count":0,"cited_by_count":13},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2016,"works_count":3,"oa_works_count":0,"cited_by_count":35},{"year":2017,"works_count":1,"oa_works_count":0,"cited_by_count":27},{"year":2018,"works_count":4,"oa_works_count":2,"cited_by_count":25},{"year":2019,"works_count":2,"oa_works_count":0,"cited_by_count":29},{"year":2020,"works_count":6,"oa_works_count":3,"cited_by_count":41},{"year":2021,"works_count":1,"oa_works_count":0,"cited_by_count":58},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":60},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":48},{"year":2024,"works_count":1,"oa_works_count":1,"cited_by_count":50},{"year":2025,"works_count":3,"oa_works_count":3,"cited_by_count":46},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":49}],"display_name_alternatives":["H Saito","H. Saito","Hisayasu SAITO","Hisayasu Saito","hisayasu saito"],"block_key":"h saito","works_api_url":"https://api.openalex.org/works?filter=author.id:A5103127009","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5103127009","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}
